Why is [stock]
Up or Down today?
Search any ticker to instantly see why it's moving — AI-powered news analysis, market context, and a plain-English explanation.
Popular searches
US
CN
JP
UK
IN
DE
SEMajor Indices
S&P 500
+1.18%
Nasdaq
+1.96%
Dow Jones
+0.66%
Shanghai
+0.84%
Hang Seng
+0.41%
Nikkei 225
+0.44%
FTSE 100
+0.25%
Nifty 50
+1.56%
DAX
+1.27%
OMX Stockholm
-0.06%
Real-time data
Price, volume, and intraday changes refreshed every minute.
AI summaries
Concise, neutral plain-English explanations of what's driving each move.
News & sentiment
Latest headlines with automatic positive/negative tagging.
Frequently Asked Questions
Why is my stock up or down today?+
Stock prices move due to breaking news, earnings reports, analyst upgrades or downgrades, sector-wide trends, and broader market movements. WhyIs analyses all of these signals in real time and gives you a plain-English summary for any ticker.
How does WhyIs explain stock movements?+
WhyIs combines live price data, the latest news headlines, and market context (indices, sector performance) to generate an AI-powered summary that explains what is driving the stock price today.
Which stock markets does WhyIs cover?+
WhyIs covers stocks from the United States (NYSE, NASDAQ), China (Shanghai, Hong Kong), Japan (TSE), United Kingdom (LSE), India (NSE, BSE), Germany (XETRA, FSE), and Sweden (Nasdaq Stockholm).
Is WhyIs stock analysis free?+
Yes, WhyIs is completely free. Search any ticker to get an instant AI explanation of today's stock price movement — no account required.
Instant AI Stock Analysis for Every Investor
Whether you're checking why Tesla is down today, why NVIDIA stock is up after earnings, or what's moving the S&P 500 — WhyIs gives you the answer in seconds. Search any ticker from the US, Europe, or Asia and get a real-time, AI-generated explanation backed by the latest news and market data.